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土曲霉利用木质纤维来源的碳水化合物生产衣康酸

发表时间:2011-10-15  浏览量:1206  下载量:553
全部作者: 李鑫,马瑞,吴昊,单宗星
作者单位: 南京林业大学化学工程学院
摘 要: 采用单因素试验优化土曲霉发酵培养条件。在此基础上,以蒸汽爆破预处理玉米秸秆酶解葡萄糖为碳源,与纯葡萄糖对比,研究不同来源的碳源对土曲霉发酵生产衣康酸的影响。结果显示:初始葡萄糖浓度为80 g/L、初始pH值为2�5、接种量为7%(体积比)、转速为200 r/min、装液量为50 mL的条件下,土曲霉发酵产衣康酸浓度为28�28 g/L. 土曲霉发酵蒸汽爆破预处理玉米秸秆酶解葡萄糖,抑制物的存在影响了土曲霉的生长和衣康酸的生产,显著降低了衣康酸的产量。
关 键 词: 林产化学加工学;衣康酸;土曲霉;玉米秸秆
Title: Itaconic acid production from carbohydrates of lignocellulose by Aspergillus terreus
Author: LI Xin, MA Rui, WU Hao, SHAN Zongxing
Organization: College of Chemical Engineering, Nanjing Forestry University
Abstract: Fermentation conditions for production of itaconic acid by Aspergillus terreus were optimized by single-factor experiments. Compared to the effect of glucose, the effects of different carbon sources on production of itaconic acid were investigated using enzymatic hydrolyzate from acid steam-pretreated corn stover. The optimal culture conditions by single-factor design were: initial glucose 80 g/L, initial pH 2.5, inoculum 7% (volume ratio), rotation speed 200 r/min and broth volume 50 mL. The concentration of itaconic acid was 28.28 g/L in shake-flask cultivation. Inhibitors in enzymatic hydrolyzate had a negative effect on production of itaconic acid by A. terreus.
Key words: chemical processing engineering of forest products; itaconic acid; Aspergillus terreus; corn stover
发表期数: 2011年10月第19期
引用格式: 李鑫,马瑞,吴昊,等. 土曲霉利用木质纤维来源的碳水化合物生产衣康酸[J]. 中国科技论文在线精品论文,2011,4(19):1786-1790.
 
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